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ASoC: stm32: i2s: fix dma configuration 

DMA configuration is not balanced on start/stop.
Move DMA configuration to trigger callback.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Olivier Moysan 2019-02-26 14:51:07 +01:00 committed by Mark Brown
parent ebf629d502
commit 1ac2bd1644
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GPG Key ID: 24D68B725D5487D0
1 changed files with 7 additions and 7 deletions
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14
sound/soc/stm/stm32_i2s.c
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@ -488,7 +488,7 @@ static int stm32_i2s_configure(struct snd_soc_dai *cpu_dai,
{
struct stm32_i2s_data *i2s = snd_soc_dai_get_drvdata(cpu_dai);
int format = params_width(params);
u32 cfgr, cfgr_mask, cfg1, cfg1_mask;
u32 cfgr, cfgr_mask, cfg1;
unsigned int fthlv;
int ret;
@ -529,15 +529,11 @@ static int stm32_i2s_configure(struct snd_soc_dai *cpu_dai,
if (ret < 0)
return ret;
cfg1 = I2S_CFG1_RXDMAEN | I2S_CFG1_TXDMAEN;
cfg1_mask = cfg1;
fthlv = STM32_I2S_FIFO_SIZE * I2S_FIFO_TH_ONE_QUARTER / 4;
cfg1 |= I2S_CFG1_FTHVL_SET(fthlv - 1);
cfg1_mask |= I2S_CFG1_FTHVL_MASK;
cfg1 = I2S_CFG1_FTHVL_SET(fthlv - 1);
return regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG,
cfg1_mask, cfg1);
I2S_CFG1_FTHVL_MASK, cfg1);
}
static int stm32_i2s_startup(struct snd_pcm_substream *substream,
@ -592,6 +588,10 @@ static int stm32_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
/* Enable i2s */
dev_dbg(cpu_dai->dev, "start I2S\n");
cfg1_mask = I2S_CFG1_RXDMAEN | I2S_CFG1_TXDMAEN;
regmap_update_bits(i2s->regmap, STM32_I2S_CFG1_REG,
cfg1_mask, cfg1_mask);
ret = regmap_update_bits(i2s->regmap, STM32_I2S_CR1_REG,
I2S_CR1_SPE, I2S_CR1_SPE);
if (ret < 0) {